"That's my worst nightmare [that] I cheated on my wife," McDermott, 47, says as the two are sitting on what appears to be a counselor's couch. "I was out of control. Sex was an escape, just like drugs or alcohol."

In a promo for the show, Spelling, 40, is seen walking with the couple's children and also sobbing on the couch.

"I'm really mad," she says. "I can never give him enough sex. He's never going to be happy with just me."